Rack assembly



FIG. 1 is a top perspective view of a rack assembly;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a left elevational view thereof, the right elevational being amirror image thereof.

The broken lines in the drawings show portions of the rack assembly andform no part of the claimed design.

CLAIM The ornamental design for a rack assembly, as shown and described.